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Jun 14th, 2026
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Joined: Mar 2013
Posts: 718 Likes: 11
Talk Morgan Regular
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Talk Morgan Regular
Joined: Mar 2013
Posts: 718 Likes: 11 |
As you can see in my previous topic from August 24 "Bevel Box Oil" I try also new and better oil.
This Omega 690 is also sticky and should be the best available.
It made a small improvement but not enough to get rid of the noise.
If rolling downhill in neutral the whole system is more quiet.
But under certain loads the box is screaming like before.
Did now +4000 km with only a small noise improvement.
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Joined: Mar 2013
Posts: 718 Likes: 11
Talk Morgan Regular
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Talk Morgan Regular
Joined: Mar 2013
Posts: 718 Likes: 11 |
I was talking to the service manager down at the factory last week when I dropped my car off for its first service about BB noise and they have found that most of the noise is due to the metal to metal mounting of the BB. There is no anti vibration mounts or cushioning so you get a resonant harmonic vibration through the chassis which amplifies the noise. So they mounted a known noisy box into a car with some rubber cushioning and it was quiet.
If its a problem to some owners perhaps putting some high density rubber under the mounting flanges might be the answer. If this is the right solution it would be great ! Hope MMC send the rubbers out to their dealers
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Joined: Jul 2013
Posts: 1,338
Has a lot to Say!
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Has a lot to Say!
Joined: Jul 2013
Posts: 1,338 |
Hope they install the rubbers underneath the bb on a week 41 build,because i want to drive & enjoy the mog for a month or so.afterwards i will have time to work on it
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Joined: Jun 2012
Posts: 2,242 Likes: 72
Talk Morgan Expert
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Talk Morgan Expert
Joined: Jun 2012
Posts: 2,242 Likes: 72 |
Mounting the bevel gearbox directly to the chassis and putting it inside a "tin box" alongside your hip cannot be ideal for a quiet result. If you put it on rubber mounts the tensioning of the drive belt will be interesting. Not a matter of a simple fix at a guess but nice to know that Morgan are at least looking at a fix, even if it is a couple of years late. Just sticking rubber padding around it may help a bit I suppose. Not so bothered about the noise if it stays the same and keeps working.
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Joined: May 2012
Posts: 1,796 Likes: 5
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: May 2012
Posts: 1,796 Likes: 5 |
I totally agree with planenut, the noise is part of the experience, as long as MMC says thats normal and it doesn't let go, I'm ok with it. Similar to a straight cut racing gearbox.
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Joined: Oct 2011
Posts: 3,560 Likes: 12
Talk Morgan Addict
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Talk Morgan Addict
Joined: Oct 2011
Posts: 3,560 Likes: 12 |
I can certainly see that rubber would help reduce the noise transmission, but if the box is noisy in the first place, that means that there is a problem, and as has been shown here, and elsewhere, problem boxes are letting go in a big way, so a quiet box will be quiet in the chassis, rubber or no rubber, and therefore, inherently reliable.
Paul
[At last, I have a car I can polish]
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Joined: Sep 2011
Posts: 14,748 Likes: 158
Member of the Inner Circle
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Member of the Inner Circle
Joined: Sep 2011
Posts: 14,748 Likes: 158 |
I don't know what specific oil is recommended by Morgan but I can tell you that we have had tremendous success with this specifically designed oil, Motul Gearbox, in Moto Guzzi gearboxes and bevel drives. Not only does it do an excellent job of lubrication but also reduces noise and wear, and makes for slicker gear changes. For many years it has been used and recommended by the Agostini dealership in Mandello.  http://www.motul.com/it/en/products/113
Peter ![[Linked Image]](http://bradley.it/public_images/drive.jpg)
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Joined: Oct 2011
Posts: 3,560 Likes: 12
Talk Morgan Addict
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Talk Morgan Addict
Joined: Oct 2011
Posts: 3,560 Likes: 12 |
Interesting, thanks for the recomendation/
Paul
[At last, I have a car I can polish]
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Joined: Jul 2013
Posts: 1,338
Has a lot to Say!
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Has a lot to Say!
Joined: Jul 2013
Posts: 1,338 |
I ordered this from ebay,good enough,correct?because i plan on changing the bb oil from time to time [url=[URL=http://s1349.photobucket.com/user/Q8morgan/media/image_zpsfe9df37a.jpg.html]  [/url]][/url]
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Joined: Mar 2013
Posts: 414 Likes: 6
Learner Plates Off!
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Learner Plates Off!
Joined: Mar 2013
Posts: 414 Likes: 6 |
I ordered this from ebay,good enough,correct?because i plan on changing the bb oil from time to time [url=[URL=http://s1349.photobucket.com/user/Q8morgan/media/image_zpsfe9df37a.jpg.html] [/url]][/url] A "Lucas" product with an American Flag on the bottle...you Brits must be appalled! 
1965 Plus 4
2008 997 Turbo Cab
1981 Alfa Spider
1954 Austin Healey 100 (SOLD)
2013 M3W (SOLD)
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